Lancang Threshold Days by Year (CHM00056954)

9 fixed thresholds counted per year at Lancang (CHM00056954): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lancang Thresholds

Lancang: days with a maximum temperature at or above 30 C (86 F) in 72 years, most in 2020 with 156.
Lancang: days with a maximum temperature at or above 90 F (32.2 C) in 72 years, most in 2020 with 71.
Lancang: nights with a minimum temperature at or above 20 C (68 F) in 65 years, most in 2010 with 130.
Lancang: days with 10 mm (0.39 in) or more of precipitation in 65 years, most in 1955 with 68.
9 fixed thresholds have at least one qualifying day at Lancang.

Days at or above 30 C (86 F)

72 years with a qualifying day

Days per year at Lancang with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 156 in 2020.

Days at or above 30 C (86 F) per year at Lancang
Year	Days	Decade average
1954	70	75.7
1955	66	75.7
1956	69	75.7
1957	83	75.7
1958	105	75.7
1959	61	75.7
1960	105	80.2
1961	103	80.2
1962	79	80.2
1963	87	80.2
1964	72	80.2
1965	75	80.2
1966	63	80.2
1967	74	80.2
1968	47	80.2
1969	97	80.2
1970	97	81.2
1971	71	81.2
1972	91	81.2
1973	98	81.2
1974	63	81.2
1975	86	81.2
1976	61	81.2
1977	75	81.2
1978	74	81.2
1979	96	81.2
1980	95	85.8
1981	73	85.8
1982	75	85.8
1983	97	85.8
1984	90	85.8
1985	80	85.8
1986	84	85.8
1987	79	85.8
1988	86	85.8
1989	99	85.8
1990	65	94.2
1991	94	94.2
1992	101	94.2
1993	81	94.2
1994	101	94.2
1995	112	94.2
1996	78	94.2
1997	80	94.2
1998	122	94.2
1999	108	94.2
2000	59	90.4
2001	91	90.4
2002	99	90.4
2003	82	90.4
2004	98	90.4
2005	97	90.4
2006	102	90.4
2007	89	90.4
2008	70	90.4
2009	117	90.4
2010	128	108.9
2011	91	108.9
2012	125	108.9
2013	110	108.9
2014	105	108.9
2015	101	108.9
2016	111	108.9
2017	99	108.9
2018	82	108.9
2019	137	108.9
2020	156	138.2
2021	135	138.2
2022	138	138.2
2023	145	138.2
2024	148	138.2
2025	107	138.2

For each year, a bar from the first to the last day at Lancang meeting 30 C (86 F).

First to last qualifying date each year at Lancang
Year	First date	Last date
1954	1954-03-06	1954-09-03
1955	1955-03-04	1955-10-03
1956	1956-03-18	1956-10-08
1957	1957-03-12	1957-09-16
1958	1958-03-04	1958-10-15
1959	1959-03-21	1959-09-13
1960	1960-03-12	1960-10-20
1961	1961-03-06	1961-10-19
1962	1962-03-17	1962-10-06
1963	1963-03-11	1963-10-12
1964	1964-03-10	1964-10-01
1965	1965-03-23	1965-09-29
1966	1966-03-08	1966-09-12
1967	1967-03-19	1967-09-21
1968	1968-03-31	1968-10-10
1969	1969-03-02	1969-10-06
1970	1970-03-01	1970-10-26
1971	1971-03-04	1971-11-04
1972	1972-03-18	1972-11-04
1973	1973-02-28	1973-10-10
1974	1974-03-07	1974-10-27
1975	1975-03-11	1975-10-28
1976	1976-03-18	1976-10-13
1977	1977-03-03	1977-10-06
1978	1978-03-21	1978-10-08
1979	1979-02-27	1979-10-16
1980	1980-03-10	1980-10-12
1981	1981-03-05	1981-10-21
1982	1982-03-15	1982-10-18
1983	1983-03-13	1983-10-25
1984	1984-02-25	1984-10-09
1985	1985-03-05	1985-10-12
1986	1986-03-16	1986-09-17
1987	1987-03-25	1987-10-19
1988	1988-03-12	1988-10-23
1989	1989-03-04	1989-09-29
1990	1990-03-25	1990-10-19
1991	1991-03-09	1991-10-17
1992	1992-03-16	1992-09-24
1993	1993-03-07	1993-10-10
1994	1994-03-08	1994-10-17
1995	1995-03-09	1995-10-17
1996	1996-03-04	1996-10-15
1997	1997-03-07	1997-10-20
1998	1998-02-28	1998-11-20
1999	1999-02-10	1999-10-10
2000	2000-03-21	2000-10-23
2001	2001-03-03	2001-10-15
2002	2002-03-05	2002-10-17
2003	2003-03-21	2003-10-13
2004	2004-03-04	2004-10-13
2005	2005-03-14	2005-10-14
2006	2006-03-10	2006-10-18
2007	2007-03-13	2007-10-03
2008	2008-03-14	2008-10-17
2009	2009-02-20	2009-10-21
2010	2010-03-07	2010-10-02
2011	2011-03-01	2011-10-15
2012	2012-03-11	2012-10-30
2013	2013-02-15	2013-10-16
2014	2014-03-14	2014-11-02
2015	2015-03-01	2015-10-08
2016	2016-03-13	2016-10-23
2017	2017-03-15	2017-10-10
2018	2018-03-05	2018-09-30
2019	2019-03-15	2019-10-25
2020	2020-03-11	2020-11-03
2021	2021-03-12	2021-10-11
2022	2022-03-07	2022-10-06
2023	2023-03-08	2023-10-30
2024	2024-03-07	2024-10-27
2025	2025-03-07	2025-08-22

Every Fixed Threshold

Fixed thresholds at Lancang
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	72	156	2020	107
35 C (95 F): Days	37	12	1979	6
90 F (32.2 C): Days	72	71	2020	30
0 C (32 F): Frost days (min	3	5	1974	4
20 C (68 F): Tropical nights (min	65	130	2010	88
10 mm (0.39 in): Days with 10 mm or more rain	65	68	1955	38
25 mm (0.98 in): Days with 25 mm or more rain	65	29	1971	12
50 mm (1.97 in): Days with 50 mm or more rain	63	10	1983	3
100 mm (3.94 in): Days with 100 mm or more rain	9	1	1958	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1954.

Download the Data

Data for Lancang threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Lancang Threshold Days by Year (CHM00056954)

Key Facts for Lancang Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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